Spot light fixture

ABSTRACT

A ceiling unit comprised of a pair of laterally spaced parallel fluorescent lamps provided with reflectors to respectively direct the light therefrom toward the ceiling and a pair of incandescent spot-light lamps between the fluroescent lamps, a first lamp directing the light therefrom downwardly and the other at an angle toward the light path of the first lamp.

0 United States Patent 1 1 1111 3,928,757

Nelson Dec. 23, 1975 SPOT LIGHT FIXTURE 2,557,129 6/1951 McDaid240/51.11 R x 2,625,646 l/l953 Goebel... 240/9 R [76] Inventor. PaulNelson, 34 Allee Emm 2,647,985 8/1953 Biller 240/51.11 R Chabaer, ParcRoy d Espagne, 2,654,830 10/1953 Runge et al 240/9 R x Marsellle, France22 Fl A 17 1973 FOREIGN PATENTS OR APPLICATIONS 1 l e 1,533,444 6/1968France 240/51.11 R [21] Appl. NO.Z 351,844 1,521,503 3/1968 France240/51.11 R

Primary Examiner-Richard L. Moses [30] Foreign Apphcauon Pnonty DataAttorney, Agent, or Firm-William Anthony Drucker May 26, 1972 France72.19622 52 US. Cl. 240/51.11 R; 240/9 R; 240/41.1; [57] ABSTRACT 240/416; 240/78 R A ceiling unit comprised of a pair of laterally spaced [51]Int. Cl. H05b 33/02 parallel fluorescent mp pr h r fl tors o [58] Fieldof Search 240/9 R, 51,11 R, 41 R, respectively direct the lighttherefrom toward the ceil- 240/1 4, 41,6, 78 R, 78 DA, 41 1 ing and apair of incandescent spot-light lamps between the fluroescent lamps, afirst lamp directing the [56] References Cit d light therefromdownwardly and the other at an angle UNITED STATES PATENTS toward thelight path of the first lamp. 2,313,131 3/1943 Elias 240/51.11 R 2Claims, 6 Drawing Figures US. Patent Dec. 23, 1975 3,928,757

SPOT LIGHT FIXTURE The invention relates to a ceiling device intendedfor lighting wards in hospitals, clinics and similar places.

In the devices hitherto known, use was made for traditional lighting ofbedside lamps, bedstead lamps and ceiling lamps; for purposes ofexaminations or applying dressings, portable lamps were used, but in anycase there was no universal, simplified and functional lighting systemmeeting all the needs of a bedridden patient.

The device according to the invention does away with these drawbacks andmakes it possible, starting from the provision of a lighting unit, toeffect a homo geneous, multi-directional area of light illuminating thewhole of the surface, in spite of screens that may be interposed, so asto do away with casting of shadows and thereby assisting clinicalexaminations, care,observation of sores and the invalids complexion,without change in colour, while enabling the patient to read in anyposition, even away from the background wall, and without the neighboursbeing able to perceive directly the sources of light.

It consists of the combination of (i) direct axial projection byadjustable incandescent lamp, positioned at appropriate intervals forvertical emission and oblique emission, and (ii) indirect bilateralprojection by luminescent tubes, whose flux is thrown on to the ceiling,each source of light being arranged to be lit simultaneously, separatelyor combined with one another to meet all practical requirements.

The accompanying drawings, given by way of nonrestrictive example of oneof the forms of carrying out the object of the invention, show:

FIGS. 1, 2 the lighting unit in cross-section and elevation;

FIGS. 3 and 4 the whole of the ceiling unit in longitudinal sectionandelevation;

FIGS. 5 and 6 one of the applications of the device.

The ceiling fitting (FIGS. 1, 2,3, 4) consists of a central casing l inwhich are mounted two jointed slewable incandescent or spot lights, 2, 3and provided with directional reflectors 4, 5 and 6, 7.

The shade 6 is vertical and the shade 7 slightly oblique to the lightpath from shade 6 at an angle of about 60. On the lateral faces of thecasing 1 are mounted the luminescent tubes 8, 9' inside the casings 10,11,-provided with reflectors 12, 13 shown in crosssection andtransparent protecting walls 14, 15.

Ventilating hoods l6, l7, 18 are provided on the lateral surfaces and onthe longitudinal surfaces 19. There are then obtained direct beams oflight A B as shown by arrows in FIG. 3 and the indirect projections C D,as shown by the arrows in FIG. 1, which ensure a luminous environment byreflection on the ceiling.

These combined light fluxes make it possible, according to the examplegiven in FIGS. 5 and 6, for a person seated away from the wall to readin positions 20, 21, 22 of FIG. 5.

Likewise, a person seated in the positions 23, 24, 25, 26 will be ableto read without any trouble with lighting that does not cast a shadow.

For medical attention, dressings, and examinations, the lighting unitprovides with the maximum of clarity the lighting of the portion to betreated. It is also possible to condition the lighting to create adetermined environment, enabling the patient to be seen as he is.

It is also possible to vary the intensity of lighting, by lighting forinstance one or two fluorescent tubes without the incandescent lighting,or by using both and a single incandescent light combined or not withone of the two indirect lighting elements.

The shapes, dimensions and arrangements of the different components mayvary within the limit of equivalence, as moreover the materials used fortheir manufacture, without thereby changing the general concept of theinvention that had just been described.

I claim:

1. An overhead lighting fixture comprising, in combination,

a housing provided with a first pair of laterally spaced elongatedcasings and a second central elongated casing,

a pair of parallel coextensive fluorescent lamp tubes respectivelysupported within said first pair of casings,

means including a separate reflector below each tube to provide fordirecting the light therefrom at an angle to the ceiling, the directedlight having vertical and oppositely directed lateral components awayfrom the first pair of respective casings,

a .pair of incandescent spotlight lamps within the elongated centralcasing and spaced therealong,

means supporting one of said spotlight lamps in said elongated centralcasing to project the light therefrom without obstruction in adownwardly vertical direction, and

means supporting the other of said spotlight lamps in said elongatedcentral casing for projecting the light therefrom without obstruction inan oblique direction both downwardly and toward the one spotlight.

2. An overhead lighting fixture according to claim 1 wherein saidspotlight lamps are provided with reflectors and shades for directingthe light from the incandescent lamps in said respective directions, thelight transmission paths of said incandescent lamps being at an angle of60 to each other.

1. An overhead lighting fixture comprising, in combination, a housingprovided with a first pair of laterally spaced elongated casings and asecond central elongated casing, a pair of parallel coextensivefluorescent lamp tubes respectively supported within said first pair ofcasings, means including a separate reflector below each tube to providefor directing the light therefrom at an angle to the ceiling, thedirected light having vertical and oppositely directed lateralcomponents away from the first pair of respective casings, a pair ofincandescent spotlight lamps within the elongated central casing andspaced therealong, means supporting one of said spotlight lamps in saidelongated central casing to project the light therefrom withoutobstruction in a downwardly vertical direction, and means supporting theother of said spotlight lamps in said elongated central casing forprojecting the light therefrom without obstruction in an obliquedirection both downwardly and toward the one spotlight.
 2. An overheadlighting fixture according to claim 1 wherein said spotlight lamps areprovided with reflectors and shades for directing the light from theincandescent lamps in said respective directions, the light transmissionpaths of said incandescent lamps being at an angle of 60* to each other.